Jack Adams Air Train Trunk designed with a horizontal fly for quick access with nature calls and a contoured pouch to nestle the boys for support. The fabric is micro Lenzing Modal that offers the finest comfort, breathability and hugging form. Made of 95% Lenzing Micro Modal and 5% Elastane Royal, Small. Chest: 35â  -37â  . Neck: 14â  -14.5â  . Waist: 27â  -29â  .